Bojana Božilović, B. Janković, Milena Pijovic-Radovanovic, H. Waisi, M. Marinović‐Cincović, S. Krstić, V. Dodevski
{"title":"Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques","authors":"Bojana Božilović, B. Janković, Milena Pijovic-Radovanovic, H. Waisi, M. Marinović‐Cincović, S. Krstić, V. Dodevski","doi":"10.2298/tsci230520153b","DOIUrl":null,"url":null,"abstract":"Thermo-chemical conversion of cigarette butt filters (CBFs) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermophysical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin, TAC) interact with cellulose acetate (CAc) through dipolar interactions and hydrogen bonding?s. Influence of these polar interactions can affect the position of glass transition temperature (Tg) of CBF. Based on estimated value of Tg from DSC analysis, it was found that CAc present in CBF has degree of substitution (DS) equals to 2.8 (DS = 2.8), where the presence of cellulose triacetate (CTA) was confirmed. It was assumed that an increase of DS leads to decline in the crystallinity. A decline of crystallinity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bonding. Based on the examination of thermophysical characteristics of the tested material, it was found that both, the heat capacity and the thermal inertia (TI) of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and porosity. Furthermore, it was inferred that magnitude drops of thermal conductivity (?) after Tg depends on the material fibrillation.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"1 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.2298/tsci230520153b","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"THERMODYNAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Thermo-chemical conversion of cigarette butt filters (CBFs) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermophysical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin, TAC) interact with cellulose acetate (CAc) through dipolar interactions and hydrogen bonding?s. Influence of these polar interactions can affect the position of glass transition temperature (Tg) of CBF. Based on estimated value of Tg from DSC analysis, it was found that CAc present in CBF has degree of substitution (DS) equals to 2.8 (DS = 2.8), where the presence of cellulose triacetate (CTA) was confirmed. It was assumed that an increase of DS leads to decline in the crystallinity. A decline of crystallinity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bonding. Based on the examination of thermophysical characteristics of the tested material, it was found that both, the heat capacity and the thermal inertia (TI) of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and porosity. Furthermore, it was inferred that magnitude drops of thermal conductivity (?) after Tg depends on the material fibrillation.
期刊介绍：
The main aims of Thermal Science
to publish papers giving results of the fundamental and applied research in different, but closely connected fields:
fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes
in single, and specifically in multi-phase and multi-component flows
in high-temperature chemically reacting flows
processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering,
The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
